Contagem e soma inválidas na consulta de guia cruzada usando o PostgreSQL

• Consulta de tabela cruzada do PostgreSQL

• Pivot em várias colunas usando Tablefunc

• Obtenha a soma distinta de uma coluna de tabela unida

select * from crosstab (
   'select name
          ,sum(count(*))   OVER (PARTITION BY name)
          ,sum(sum(price)) OVER (PARTITION BY name)
          ,city
          ,count(city)
    from   products
    group  by name,city
    order  by name,city
    '
--  ,'select distinct city from products order by 1' -- replaced
    ,$$SELECT unnest('{Dubai,London,Melborun
                      ,Moscow,Munich,Shunghai}'::varchar[])$$
) AS tb (
    name varchar(20), TotalSales bigint, TotalAmount bigint
   ,Dubai bigint
   ,London bigint
   ,Melborun bigint
   ,Moscow bigint
   ,Munich bigint
   ,Shunghai bigint
   );